MIR Serialization: Serialize MBB successors.

[oota-llvm.git] / include / llvm / CodeGen / FunctionLoweringInfo.h

diff --git a/include/llvm/CodeGen/FunctionLoweringInfo.h b/include/llvm/CodeGen/FunctionLoweringInfo.h
index dadaf15a48a4d0efa422eb2c242e8aa04b2be472..82c762ed850fec26253ab59134dc6e487a2cde5b 100644 (file)
--- a/include/llvm/CodeGen/FunctionLoweringInfo.h
+++ b/include/llvm/CodeGen/FunctionLoweringInfo.h
@@ -18,6 +18,7 @@
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/IndexedMap.h"
+#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/CodeGen/ISDOpcodes.h"
@@ -73,6 +74,16 @@ public:
   /// cross-basic-block values.
   DenseMap<const Value*, unsigned> ValueMap;
 
+  // Keep track of frame indices allocated for statepoints as they could be used
+  // across basic block boundaries.
+  // Key of the map is statepoint instruction, value is a map from spilled
+  // llvm Value to the optional stack stack slot index.
+  // If optional is unspecified it means that we have visited this value
+  // but didn't spill it.
+  typedef DenseMap<const Value*, Optional<int>> StatepointSpilledValueMapTy;
+  DenseMap<const Instruction*, StatepointSpilledValueMapTy>
+    StatepointRelocatedValues;
+
   /// StaticAllocaMap - Keep track of frame indices for fixed sized allocas in
   /// the entry block.  This allows the allocas to be efficiently referenced
   /// anywhere in the function.